电催化剂
分解水
析氧
双功能
过电位
化学工程
材料科学
催化作用
金属有机骨架
无机化学
化学
电极
电化学
有机化学
物理化学
光催化
工程类
吸附
作者
Swati J. Patil,Nilesh R. Chodankar,Seung‐Kyu Hwang,Pragati A. Shinde,Ganji Seeta Rama Raju,Kugalur Shanmugam Ranjith,Yun Suk Huh,Yugui Han
标识
DOI:10.1016/j.cej.2021.132379
摘要
Electrocatalytic water splitting is a very promising and sustainable approach for generating hydrogen as a clean carbon-free fuel. To develop an efficient electrocatalyst for water splitting, the overpotential for this reaction must be minimized by using a capable electrocatalyst that can support the hydrogen evolution reaction (HER) and the oxygen evolution reaction (OER). In this study, we prepared a unique core–shell structure, Co-metal–organic framework (MOF) derived cobalt diselenide laminated with molybdenum diselenide (MOF-CoSe2@MoSe2) and assessed its performance as a bifunctional electrocatalyst for the HER and OER in alkaline media. The CC/MOF-CoSe2@MoSe2 core–shell structure fabricated directly on a flexible carbon cloth substrate demonstrated low overpotentials (η10) of 109.87 and 183.81 mV for the HER and OER, respectively, and a low voltage of 1.53 V for overall water splitting activity with an electrolyzer cell with symmetric CC/MOF-CoSe2@MoSe2 electrodes. The developed CC/MOF-CoSe2@MoSe2 catalyst had excellent stability over 24 h for OER, HER, and overall water splitting activity. These results suggest that lamination of MOF with a transition metal dichalcogenide is an effective route for developing the highly efficient and sustainable bifunctional electrocatalyst for overall water splitting activity.
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